Fire control mechanism



. July 28, 1931. 5.5. BISSONETTE FIRE CONTROL MECHANISM Filed July 28, 1928 INVENTOR EDM/VS. 31530175176 Patented July 28,. 1931 AST conponnmrozuior b310 5 I Ap plication filed my =28,

isoperating a' device remotely situated from theuarea in which the temperature change kes @13 vv'ith t determined degree of tempera- (f0 er"iijeetsandedvantagesof my inve 7 tie vvilllbeciome'r'no'r'e apparent from the 01- low ngjdesoitiption and the? dfa'wiiigs' form- 111g a 'part of this specification,and in when he numerals are empl'oyed -to designate like p'arts tlifoughoutthesame, I 1 is a: diagrammatic view; of the pre-' 7 fer embodiment of my invention showing: some offt'he partsin sections 5 v fiFig; 2 isa'planvievvcof one form of a heat accumulates used in connection withmy in.-

ennomz: s r f Figfgis elevation ofanotherform of,-

heat accumulator used in connection withmy --;-invention;and v Fig. is an enlarged 'vertical section, p

a portion of the indicator tube and overflow receptacle showing {the return orifice in the e i i i y c 7 of my invention. The Yc'onduits I -1 and 2 are preferably formed of copper tubing and may, be enclosed within jprotective conduits, such as electric conductor conduits.

izekjl iits 1 and2 communicate With eachother through co linga onecend of the 'conduit, 1. being onnected to device such asa heat" accumulatorj Ayand the other end is, con- 1 nn'ecjted througha' coupling 4 and'pipe 5m p I I OHIO ;"1HE -GPEARL M. BISSGNETTEQ'EXEQUTORS OF fs'AIn substantially simultaneously j though I have found,

as alcohol or a mixture-of glycerineand the drawings, andiparticul arly Figs; 1 2,1 have illustrated the preferred form;

These con-f a liquid supply reservoir The other end f fiT- w il nwnv s. BIssONET'rE, v DECEASED;

Finn coN'rno MECHANISM 1928. ser al No; 295,91d

of 2 communicates, coupling to the-interior of an expansion, bellows 19. 'A liquid supply control valve "lemons-news GTETARDTA'N EoiuPMnNr-coMPANY, 'oso evmm, omen of the'fioat type is indicated at ,7 andis i11 terposed between the supply reservoir 5 and the conduit 5'. It will be seen that-when the level offlthe liquid in the conduitblrecedeis the ball will be unseated" fromcthe -seat 8 formed in the casingv6 andvvillf permit liquid to flow into the casingv and conduit fromthe reservoir until thelevelraises the'fioat to 1 its seat 8 to shut off the supply. 'Iheopera non 1s thus-automatic and insures a capacity ofliquid Within the system at all times. The

liquid which I prefer to use in connection with my invention is carbon tetrachloride (C01 since this is quickly responsive to: temperatu'i e changes and eXpa1ids;readily, al

alcohol to; With myj'invention. a o I u have provided; a. means which connected through a pipeli to the conduit 5 anda tube '12 I} communicating at its upper end wit'hthe interior of an overflowreceptacle 13. .Ilalso b-esuitable for use in connection other substances such i i, includes a closed chamber 1 0;

extending into the chamber and I provide a scale conveniently graduated to indicate pressure exerted onlthe liquid in;

r the systeimand which is located immediately behind thetube 12 for reading the level of a a liquid, such as mercury, within the receptacle '10 and indicated at Hg. The tube 12 is provided with an orifice 14 located at a point in the tube near the bottom of the receptacle 13 to permit anyjoverflow Within the re ceptacle to flow backthrough'the tube when the mercury level in the tube is below the 1 90 I, t i

orifice I havethus providedmeansnot only for indicating the pressures ithint-he con duits'1,2 and 5, but have also provided means I for conserving'any of the mercuryoverflow thatmay be caused by abnormal pressures Within these conduits. I I V I have also provided means for transmittingchanges in temperature of an area in which the means is placed; which; according I to the preferred embodiment of my invention shown in F igs; 1 and'2 consists of a hollow disc-like structure having communication with the conduit 1 through a coupling 15. This "means is in the nature of a heat accumulator and is preferablyconstructed of sheet copper or other material which. is a good conductor of heat; The'upper and low- 'er sections 16 and 17, respectively, are cor- "rugated, as shown, to provide greater heat accumulating surfaces, and the space between thesexsectionsis lfilled with the liquid supplied through the conduit The accumulator is provided with suitable couplings 15 and 18, the latter being plugged when the vicinity of the device A the pressure created will be transmitted by the liquid to expand V l the bellows toward the head 26 of the arm 20.

,Ihave also provided means operable by the expansion of the bellows for actuating a given object such as acontrol valve in a fire ex- 'tinguishing system, a booster pump, fire movement of the .cam I provide roller bear- I ings between the cam and its shaft. The cam doors, alarms and the like. This means may be mounted on a panel C and includes a cam 21 rotatable on a shaft 22. To facilitate the is cutaway as at 23 for purposes which will i be described presently. A link 24 is connected J at one end to the cam as at .25 and its other end carries an adjustable arm 20. having an enlarged head on one end and engageable with an end of the expansion bellows. The ep'posite end of the arm 20 is screw threaded intoanopening in the link24 and may; be adjustedaxiallywith respect? oY the link "by means of a lock nut 27; In this'manner the head 26 may be set apredetermined distance from'the' adjacent end of the bellows sothat the latter will operate the link and cam only. when the fluid expands. the bellows sufiiciently to engage the head 26, and corresponding to.

a predetermined. temperature in the vicinity of the heat accumulator. The arm 20 may be graduated if desired so that the operator may adjustithe arm to be engaged by the. end

of thebellows at its expansion; j p I A counterweight 28 ispiv-otally attached tothecam and normally tends to rotate the cam in a counter clockwise direction to bring af'predet'e'rmined point of i the head'26 into contact with the adjacent end of the bellows.

' In the embodiment illustrated I haveshown a control valve D as thedevice to be operated by. a predetermined risein temperature,but it will be understood that other devices and mechanisms such as fire doors,booster'pumps, alarms, and so forth, maybe similarly operaft-ed, shown in the drawingsthe valye D is provided with a handle or lever 31 having a perforated endas at 32.

A weight 33 is norma'llysuspended from one end of a rocker arm 34 by, means of a headed wire or rod 35; The head or stop 36 normally is seated in the bifurcated end 37 of thearm 34. The arm; 34 is pivoted to rock about thefulcrum 38 anditsother end is provided with an upwardly projecting trip;39. A pair of links 40 and 41 are pivotally con nected at their adjacent end's as at42 .and

carry an idle roller 43 which normally engage the periphery 44 of the cam, and which when the cam is rotated will roll along the walls: of'the' cut away portion 23 of the cam, thus lifting the trip end 45of the link 41 from the trip 39 and allowing the weight 33 to rock the arm 34 about its pivot in a clockwise direction, whereupon the head 36 is unseated and the weight 33 is released. The drop of the Weight is sufficient when thus released to rock the lever 31 and operate the device D. 1 In Fig. 3 I haveillustrated a second form of heat accumulator B which consists preferably of a sheet copper sphere having a coupling 51 for connection with the conduit'l.

Various changes may be made in the details of construction of my invention without departing from the spirit of the invention or the scope of the subjoined claims. e

Iclaim:

1. A heat control device comprising a closed fluid system including aheat accumu lator and an expansion member,"cou nterweighted mechanism-normally held inoperative, and means actuated by the expansion member upon application of heatto the heat accumulator for releasing the counterweight whereby'the mechanism isactuated. 2; A he'at' controlj device comprising 'a closed fluid system including a heat accumulator andan expansion membercounterweighted operative mechanism normally held inoperative, and means including a cam operated by the expansion member uponthe application of heat to the accumulator for releasing the counterweight whereby the operative mechanism is actuated. V

3. A heat control device comprising a closed fluid system including a heat'accumulator and an expansion member, operative mechanism, cam means adapted to be actuated by the expansion member upon the application of heat to the accumulator, a roller carried by links associated with the cam means, said links normally holding said op} erative mechanism inoperative, said roller bearing against the cam means and adapted to be operated thereby to actuate the operative mechanism. i i i 4. A heat control device "comprising a closed fluid system including a heat accumulator and an expansion member, the latter adapted to be actuated by thefluid ofthe system upon the application ofheatto the accumulator, fluid supply means, and means for permitting passage of fluid' from the'fluid supply means to the" fluid system while pre- Venting reverse flow thereof.

" Intestimony whereofhe hereunto affixes his signature this 24th day of J uly, 1928.- P

EDWIN s BIssoNETTE, 

